Means for priming pumps



Dec. 4 1923. I 1,475,994

H. M. HAvENs MEANS FOR PRIMING PUMPS Filed Feb. 16, 1925 PRIMING PUMPpump SUCTION DISCHARGE INVENTOR HOMER M.HAVEN$ A-r-rYs.

Patented Dec. 4, I923.

UNITED STATES- 1,475,994 PATENT OFFICE.

HOMER M. HAVENS, OI COLUMBUS, OHIO, ASSIGNOR TO THE SEAGRA'VE COMPANY 4OF COLUMBUS, OHIO, CORPORATION OF OHIO.

MEANS FOR ramme PUMPS.

Application filed February 16, 1923. Serial No. 619,349.

drives'the main pump and also has means for connecting the driving powerwith the priming pump shaft when the main pump is to be primed anddisconnecting the power from the primin pump shaft when the riming ofthe mam pump has been effected.

he object of the present invention is to. provide improved means wherebythe driving power may be manually connected with the priming pump andmeans whereby such power is automatically disconnected from the primingpump when the'main pump has been primed.

The invention is embodied in the example herein shown and described, thefeatures of novelty being finally claimed.

In the accompanying drawing- .Figure 1 is largely a view in sideelevation with such parts in section as will illustrate details of thepresent invention.

. Fig. 2 is a detail looking toward the left of Flg.1 1 at the clutchoperating lever.

In t e views 5 designates the main pump which is of any usual impellertype employed in fire extinguishing engines. The 1118,111 pump, asshown, has a suction and a discharge opening located as indicated by thewords in Fig. 1. The pump impeller shaft is designated 6 and said shaftis provided with a pinion 7 engaged by a spur gear 8 on a sleeve. 9adapted to be connected with a power shaft 10 by means of a clutch 11.The pinion 7 has its right hand.

face provided with a jaw clutch member 7 The priming pump 18 shown at12, it being communicatingly connected with the main pump by means of apipe 13, and a casing 13 mounted on and communicating with the shell ofthe mainpump.

i The shaft 14 of the priming pump is perforated longitudinally andthrough said perforation is extended a rod .15 having connected to itsinner or left hand end by means of pin 16 a jaw clutch member 17 tocooperate with the clutch member 7 The clutch member 17 has a splinedsliding connection wlth the inner end of the priming pump shaft 14 sothat when the clutch member 17 is turned by the clutch member 7 theshaft of the priming pump is rotated. At its outer end the rod 15 isswive'lly connected with a hand lever 19 fulcrumed at 20, said leverbeing adapted to be operated by pressure in the main pump to release theclutch as hereinafter described. I

The casing 13 is equipped with a flexible diaphragm 21 held down by aspring 22 on a pin 23' provided witha cup shaped end 24, said pinprojecting upward through the casing 13. F ulcrumed by means of a shaft25 on abracket 26 on top of the casi'ng13 is a lever 27 connected at oneend to the upper endof the pin 23 and connected at its other end to thestem 28 of a valve 29 arranged within the casing 13* and adapted to openand close the pipe 13. The shaft 25 of the lever 27 has aflixed to oneend thereof a crank arm 30 and to the free end of the latter is hinged arod 31 extended through an eye 32 in the hand lever 19. The free end ofthe rod 31 is threaded to receive a nut 33 which is adapted to beadjusted and fixed by a jam nut 34, said nut 33 constituting a lugadapted to draw on the hand lever to disconnect the priming pumpoperating clutch when the main pump has been primed. The character 35designates a screen to prevent sand, sticks and other objectionablesolids from passing from the main pump into the priming pump. p

The operation is this: Assuming'thepower shaft 10 is being driven andthe clutch 11 engaged therewlth thehandle end of the hand lever 19 isdrawn outward by the at- I ward to disengagethe c utch members 7 and 17.When the pumping operation of the main pump is stopped the spring 22opens the valve 29 and moves the rod and 10;; the ro 31left-Y-- with theprimin the hand lever 31to the position shown in broken lines in Fig. 1thereby leaving the hand lever 19 free and in position for manuallyreenga 'ng said clutch members 7 and and its pump shaft, manuallyoperable means or engaging said clutch means to connect the main umpshaft with the priming pump shaft or priming the main pump andautomatically operable means for disengaging said clutch means when themain pump 13 primed.

' pad.

2. In, combination, a main pum and its shaft, a priming pump thereforiaving' a priming connectlon therewith and having a shaft, means fordriving the shaft of the. main pump, a clutch means .for operablyconnecting the shaft of the main pump with the priming pump shaft,manually operable 'means for engaging said clutch means to connect themain pump shaft with the priming pump shaft for priming the main pump,

and automatically operable means fordisengagingsaid clutch means whenthe main pump 15, primed. consisting of means actu by pressure of the inpump when aving a' so actuate said reg a emma 3. In combination, a mainpump and its shaft, a priming .pump therefor having a priming connectiontherewith and having a shaft, a valve in said priming connection aclutch means for connecting the shaft 0 the main pump with the primingvpump shaft,'manu ally operable'means for engaging said clutch means tooperably connect I the main pump shaft with the priming pump shaft forpriming the main pump, and automatically operable means for dis-'engaging said clutch means when the main pump is primed consisting ofmeans actuatedb pressure of the main pump when prime and means connectedtherewith for actuating the manually operable means,

said pressure actuated means also connected with said valve and adaptedto close said valve.

4. In combination, a main pump and its shaft, a primin pump thereforhaving a priming connectlon therewith and also having a shaft, a valvein said priming connection, a clutch means for connecting the shaft ofthe main pump with the priming pump shaft, manually operable means forengaging said clutch means to operably connect the main fptump shaftwith the priming pump sha an automatically operable means for'disengaging said clutch means when the main pum is primed consistingsaid manually operable means to disengage said clutch and means actuatedby means of v pressure in the main pump when primed to d close saidvalve. 0 I; R. HAVENSu o of a rod provided with a lug to operate on"

